Barrel-stave-jointing machine.



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J. L. PRESTON.

BARREL STAVB JOINTING MACHINE.

APPLICATION FILED 00-1529, 1910.

1,01 1,368, Patented Dec,.,12, 1911.

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J. L. PRESTON. BARREL STAVB JOINTING MACHINE.

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(team/t3 wi/lmwaeo JEFFREY LOUIS PRESTON, 0F GRAFTON, ILLINOIS.

BARREL-STAVE- JOINTING MACHINE.

Specification of Letters Patent.

Patented Dec. 12, 1911.

Application filed October 29, 1910. Serial No. 589,721.

To all whom it may concern:

Be it known that I, JEEEREY L. PRESTON, a citizen of the United States, residing at Grrafton, in the county of Jersey and State for jointing barrel st-aves or cutting barrel staves by means of a band saw, so as to shape the barrel stave-s and provide their side edges with the required curves or bilges, the lnvention consisting 1n the constructlon,

combination and arrangement of devices hereinafter described and claimed.

In the accompanying drawings-I* igure 1 is a front elevation of a barrel stave jointing machine construction in accordance with my invention. Fig. 2 is a plan of the same.

Fig. 3 is a vertical transverse sectional are secured to the said standards and proj ect horizontally from the rear sides thereof.

The said arms 4:, 5, respectively support lower and upper yoke frames 6, 7 each of which is provided at one end with longitudinal guides 8. The standards are connected by a pair of cross bars 9. The yoke frames are provided at one end of the machine with bearings for a vertical shaft 10 which is provided near its lower end with a driving pulley 11 for operation by a belt and is provided atits upper end with a band saw pulley 12. Longitudinally movable bearings 13 are disposed and movable in the guides 8, the said bearings carrying a vertically disposed adjustable shaft 14 which has a band saw pulley 15 at its upper end. Each of the adjustable bearings 13 is provided near its outer end with an opening 16, and each guide 8 has at its outer end a cross bar 17. Adjusting bolts 18 extend have their headed inner ends disposed in Lower arms 1 and upper arms 5.

the openings 16 of the bearings13 and engaged with cushioning springs 19 which bear between the said heads of the adjusting bolts, and the outer sides of the said openings 16. On each adjusting bolt is an ad justing nut 20 which engages the said adjusting bolt and bears against the outer side of the corresponding cross bars 17 The band saw pulleys 12, 15 are connected by a band saw 21, the front'lead of which is at the front side of the frame 1. The bed 22 of the frame is secured between the standards 2, and operates vertically in guides 23 with which the said standards are provided. A foot lever 24 is attached to a rock shaft 25 which is mounted in suitable bearings 26 wit-h which the standards are provided. The said rock shaft is provided near its ends with rock arms 27 which are connected by means of rods 28 to the vertically movable bed, and hence the bed may be raised and lowered. The bed is provided on its front side with rests' 29 and also with outwardly extendingguides 30. A rock shaft 31 is mounted in bearings in lugs 32 which project from the front side of the bed. Gage levers 33 are secured to the shaft 31 so that they are movable in unison angularly toward and from the bed 22, and the said gage levers operate in guides 30, and are provided with outwardly extending handles 34 either or both of which may be grasped by the operator so as to move the said gage levers toward or from the bed, and hence toward or from the front, cut-ting lead of the band saw. The teeth of the said band saw are on the lower edge thereof as shown. Soft metal rollers 35 engage the toothed edge of the saw, should the latter become slack, and prevents the saw from striking the frame.

The frame 1 is provided on its front side at a point in rear of the front lead of the band saw with a support 36 which has at its upper side a horizontal rearwardly extending web or arm 37 which is provided at its rear edge with upturned lugs 38 which are disposed at suitable points. Heads 39 are mounted on the said arm or web of the support for movement longitudinally of said heads and transversely with respect to said support and are provided each with a longitudinal slot 40, the said support 36 having securing bolts 41 which extend through the slots 40 of the said heads. An adjusting screw 42 projects from the rear rollers bearing on the front side of the front :lead of the saw. Nuts 46 are screwed on the upper portions of the said spindles and bear on the heads so as to secure the said spindles to the heads, and each of the said spindles is provided with a duct 47 which extends downwardly therein, from the upper side thereof and terminates at one side of the spindle. Grease cups 48 for lubricant are secured to the upper ends of the spindles, and communicate with the ducts 47 thereof, and serve to supply lubricant to the spindles and the rollers 45, which revolve thereon.

By means of the adjusting screws 42 and the adjustable heads 39 which carry the rollers 45, the said rollers may be adjusted as required to bend the effective front lead of the hand saw into the required shape, to correspond with the desired curved or ibilged side edges of the staves to be jointed on the machine. The support 36 is also provided at suitable points on its front side with brackets 49, which carry horizontally disposed spindles 50 which are secured in place by set screws 51, and form the bearings for rollers 52, which bear on the upper edge of the front lead of the band saw and prevent the said lead of the band saw from being deflected vertically. The said spindles 50 are provided with lubricating ducts, and also with grease or oil cups 53 for lubricating the said rollers 52.

The operation of the machine is as follows: Assuming that the band saw is in operation, and that the bed with the rests is lowered, a stave is placed on the rests 29 and the operator by depressing the foot lever moves the bed, together with the rests, and the stave upwardly, and presents the stave to the action of the front lead of the saw, and causes the saw to joint one side edge of the stave. The bed is then lowered and'the stave is then turned by the operator so as to dispose its jointed side edge outermost and the operator then sets the gage levers manually as required by the width of the stave, and then again depresses the foot lever so as to cause the bed with the rests and the stave thereon to be again raised so as to present the straight edge of the stave to the action of the band saw and cause the same to be jointed. In operating the machine, the

staves which are of unequal widths are jointed according to the various widths of the staves, at random, it being the object to make each stave as wide as possible so as to avoid unnecessary waste of the timber From the foregoing it will be understood that my improved jointing machine employs a band saw and guide and adjusting rollers in connection therewith, to deflect the outting lead of the saw, and maintain the same at the required curvature or shape to properly joint or bilge the staves and that the band saw and the rests or supports for the work are movable, the one with respect to the other to cause the work to be presented to and moved across the cutting edge of the saw.

While I have herein shown and. described what I regard as a preferred embodiment of my invention, I would have it understood that I am not limited to the details of construction herein shown and described as it is obvious that modifications may be made therein Within the scope of the appended claims without departing from the spirit of my invention.

I claim 1. A stave jointing machine comprising a 'frame having vertical standards provided on their opposing sides with vertical guides, pulleys mounted on the ends of said frame, a band saw connecting the pulleys, a fixed support on the frame in rear of the front lead of the saw, heads mounted on the said support independently of one another and independently adjustable thereon in the direct-ion of their own length and projecting from the front side thereof, rollers carried by the heads and bearing against the front side of the front lead of the band saw, a

bed movable vertically in the vertical guides of the standards, means to raise and lower thei1 bed and work supporting means on the be 2. A stave jointing machine comprising a frame, a saw, guiding and operating means for the saw, a bed mounted in the frame for vertical movement to and from the cutting edge of the saw, work supporting means on the bed and comprising rests which project from the front side and also extend above the upper side of the bed, guides secured to the said rests, a rock shaft mounted in bearings on the front side of the bed, gage levers secured to the rock shaft and operating in the guides of the rests.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

JEFFREY LOUIS PRESTON.

Witnesses:

H. R. CRANE, E. HEYSENBURG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

